Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old French
parfont
←
Latin
profundus
(inherited)
→
French
profond
(mention)
→
Middle French
parfond
(derived)
→
Old French
profont
(mention)